We have given at least two synonyms. In the bracket, one antonym for a few words has also been given to help you learn easily.
Abandon: leave, forsake (Retain)
Abase: humiliate, disgrace (honor)
Abash: confound, shame (encourage)
Abate: subside, lessen (raise)
Abbreviate: condense, reduce (expand)
Abet: assist, encourage (discourage)
Abhor: hate, loath (like)
Abject: mean, degraded (proud)
Abjure: repudiate, disclaim (accept)
Aboriginal: indigenous, native immigrant)
Abortive: fruitless, futile (effective)
Abscond: decamp, runoff (stay)
Abstruse: obscure, hidden (open)
Abysmal: endless, bottomless (P-09)
Acerbity: acrimony, bitterness (sweetness)
Addicted: accustomed to, devoted (free)
Adjacent: near, contiguous (distant)
Adjourn: defer, postpone (advance)
Admonish: chide, rebuke (praise)
Adroit: skillful, expert (P-05/T-05)
Adversity: misfortune, hardship (prosperity)
Affable: polite, courteous (uncivil)
Affliction: trouble, distress (comfort)
Affluence: opulence, wealth (poverty)
Aggravate: intensify, heighten (lighten)
Alacrity: alertness, readiness (inactivity)
Alienate: transfer, estrange (reconcile)
Allay: calm, alleviate (excite)
Allure: attract, entice (repel)
Altercation; wrangle, dispute (agreement)
Ambiguous: doubtful, equivocal (obvious)
Ameliorate: improve, amend (worsen)
Amiable: charming, lovable (unlovable)
Amicable: friendly, sociable (unfriendly)
Amnesty: pardon, condonation (P-05)
Anguish: agony, pain (comfort)
Annex: add, join (detach)
Annihilate: destroy, annul (preserve)
Annul: rescind, abrogate (confirm)
Apathetic: hostile, emotionless (P-2000)
Apex; summit, peak (P-05)
Appease: assuage, pacify (provoke)
Arduous: laborious, difficult (easy)
Arrogant: haughty, overbearing (humble)
Assail: assault, invade (defend)
Astute: crafty, cunning (stupid)
Atrocious: heinous, flagrant (decent)
Audacious: impudent, bold (timid)
Auspicious: fortunate, propitious
Baleful: injurious, noxious (harmless)
Barbarous: savage, wild (civilized)
Beguile: cheat, deceive
Behest: order, command
Benevolent: charitable, benign (malevolent)
Beseech: beg, entreat
Blasphemy: impiety, profanity (reverence)
Bleak: cold chilly (warm)
Bliss: rapture, felicity (unhappiness)
Blithe: happy, joyous (sorrowful)
Boisterous: clamorous, rowdy (quiet)
Bonhomie: good-naturedness, amiableness (P-10)
Brawl: altercation, squabble (harmony)
Burlesque: farcical, comical (serious)
Cadaverous: pale, ghastly
Cajole: coax, flatter (repel)
Camaraderie: intimacy, companionship (P-13)
Candid: frank, just (unfair)
Caprice: whim; freak (T-04)
Cardinal: primary, principal
Carnal: sensuous, lascivious (spiritual)
Castigate: punish, chastise (praise)
Cavil: censure, criticize (approve)
Chagrin: mortification, disappointment (satisfaction)
Chary: wary, cautious (reckless)
Childish: juvenile, puerile (sensible)
Chivalrous: heroic, gallant (cowardly)
Choleric: irascible, angry (calm)
Churlish: sullen, rude (civil)
Circumspect: prudent, cautious (incautious)
Clandestine: secret, underhand (open)
Colossal: enormous, gigantic (puny)
Comely: fair, handsome (ugly)
Compact: make-up-case, compressed (T-05)
Compunction: remorse, regret (recklessness)
Congruous: fit, appropriate (discordant)
Conjecture: guess, surmise (certainly)
Connive: disregard, conspire, (P-04)
Conspicuous: manifest, remarkable
Consummate: finished, complete (imperfect)
Contaminate: pollute, defile (purify)
Contemptuous: disdainful, scornful
Contentious: quarrelsome, litigious
Contravene: oppose, contradict (assist)
Convivial: festive, hilarious (unsocial)
Corpulent: fleshy, fat (thin)
Corroborate: confirm, establish (disprove)
Counterfeit: false, forged (genuine)
Covert: clandestine, disguised (overt)
Coy: shy, modest (pert)
Crafty: wily, cunning (ingenuous)
Craven: fearful cowardly (T-13)
Dainty: palatable, delicious (unpalatable)
Debility: weakness, infirmity invigoration)
Decorum: decency, propriety (impropriety)
Decree: ordinance, mandate
Defer: postpone, adjourn
Deference: reverence, honour (disrespect)
Defile: stain, contaminate (purify)
Demagogue politician, troublemaker (P-09)
Demolish: destroy, raze (build)
Deplete: exhaust, bankrupt (T-04)
Desecrate: pollute, profane (consecrate)
Despicable: worthless, contemptible
Desserts: sweet, pudding (P-10)
Differentiate: distinguish, discriminate (P-03)
Diffidence: hesitation, timidity (T-04)
Diligence industry, perseverance (idleness)
Discern: behold, observe (confuse)
Disparage: discredit, decry (applaud)
Disparity: inequality, gap (P-05)
Disport: amuse, entertain (P-04)
Docile: meck, gentle (T-09)
Ecstasy: rapture, trance
Effete: exhausted, effeminate (vigorous)
Egotism: vanity, conceit (modesty)
Elegant: refined, graceful inelegant) (P-2000)
Elucidate: explain, interpret (obfuscate)
Embellish: adorn, beautify (spoil)
Emolument: pay, remuneration
Encomium: praise, eulogy (censure)
Encroach: trespass, intrude
Enigmatic: puzzling, perplexing (T-09)
Equanimity: coolness, calmness
Eruption: explosion, outburst
Ethereal: heavenly, celestial (earthly)
Evanescent transitory, fleeting (permanent)
Exacerbate: vex, exasperate (soothe)
Excruciate torment, agonize alleviate)
Expatriate: exile, banish (repatriate)
Exquisite: perfect, refined (unrefined)
Extenuate: reduce, lessen (intensify)
Extravagant: lavish, spendthrift (economical)
Exult: rejoice, delight (grieve)
Facetious: funny, humorous (serious)
Fallible: uncertain, erring (infallible)
Fastidious: dainty, meticulous
Fatigue: exhaustion, weariness
Felicitous: happy, apt (P-05)
Fiasco: failure, debacle (T-04)
Filibuster: pirate, freebooter
Flaccid: weak, loose (firm)
Flippant: saucy, irreverent
Florid: ornate, flowery (plain)
Foray: raid, incursion
Fortitude: courage, grit
Frigid: unfeeling, chilling (warm)
Frugal: economical, thrifty (extravagant)
Furbish: burnish, brighten
Furtive: stealthy, covert (P-05)
Galling: irritating, harassing (P-02)
Garrulous: chattering, loquacious
Gaunt: lean emaciated, thin (corpulent)
Goulash: stew, olio (P-09)
Grotesque: odd, bizarre
Hackneyed: stale, trite (novel)
Hapless: unfortunate, unlucky (lucky)
Harangue: speech, lecture (P-09)
Hubbub: uproar, tumult (T-10)
Hypothetical: supposed, unconfirmed (T-10)
Ignominious: shameful, humiliating
Imbecile: silly, idiotic (sane)
Immaculate: faultless, unblemished (blemished)
Imminent: close, impending (T-01)
Immunity: protection, freedom (P-04)
Imperious: arrogant, authoritative (servile)
Imposter: rogue, knave, charlatan
Impromptu: offhand, extempore (P-09)
Incisive: trenchant, sharp (mild)
Incongruous: absurd, divergent (T-2000)
Indigent: destitute, poor (T-01)
Inexorable: relentless, unyielding (lenient) (P-10)
Infernal: hellish, diabolical, fiendish
Ingenuous: sincere, candid (disingenuous)
Ingenuity: skillfulness, intelligence (T-01)
Iniquitous: vicious, wicked (fair)
Invincible: unconquerable, unbeatable (P-2000)
Irascible: irritable, touchy (good-natured)
Itinerant: roving, nomadic, wandering
Jealous: envious, covetous (P-2000)
Jocose: humorous, playful (grave)
Knack: art, dexterity (clumsiness)
Labyrinthine: intricate, maze (straightforward)
Laconic: terse, brief (verbose)
Laggard: sluggish, tardy, loitering
Languid: weak, faint (vigorous)
Lascivious: lewd, wanton (chaste)
Lethal: deadly, fatal (harmless)
Liaison: intimacy, connection (T-01)
Lucrative: paying, profitable (unprofitable)
Lucre: gain, profit (loss)
Ludicrous: ridiculous, absurd (grave)
Lugubrious: doleful, mournful (cheerful)
Lurid: gruesome, dismal, murky (bright)
Magnanimous: generous, forgiving (selfish)
Magniloquent: inflated: bombastic
Mandate: command, authorization
Maudlin: emotional, sentimental
Maxim: proverb, adage
Meddlesome: officious, intrusive (non-interfering)
Mendacious: false, untruthful (veracious)
Mercenary: avaricious, vena, mean
Meticulous: precise, scrupulous (sloppy)
Mollify: soften, assuage, pacify
Mundane: worldly, earthly (heavenly)
Nauseous: sickening, abhorrent (T-10)
Nebulous: confused, hazy (clear)
Niggardiy: stingy, miserly (generous)
Noxious: harmful, poisonous (harmless)
Obdurate: stubborn, obstinate, unyielding
Obviate: counteract, prevent (hp)
Offal: wealthy, affluent
Ostentation: pomp display (modesty)
Paltry: mean, despicable, beggarly
Pallid: pale, colorless (colorful)
Pandemonium: uproar, racket
Paramount: supreme, eminent (trivial)
Pellucid: clear, limpid, transparent
Perpetual: eternal, enduring (P-05)
Pertinent: relevant, proper (T-01)
Philanthropist: altruist, Good Samaritan
Picturesque: vivid, graphic
Pillage: plunder, rob
Poltroon: coward, dastard (T-04)
Ponderous: heavy, bulky (light)
Pontifical: pretentious, splendid (P-09)
Precipitate: hurry, hasten, expedite
Preclude: stop, hinder (help)
Predicament: plight, dilemma
Predilection: prejudice, fondness
Preposterous: unbelievable, nonsensical (reasonable)
Proclivity: aptitude, disposition (T-03)
Progeny: offspring, descendant
Prone: prostrate, supine(T-04)
Propensity: predisposition, a proclivity (P-02)
Propitious: pleasing, favorable
Puerile: trivial, childish (sensible)
Punctilious: careful, scrupulous (careless)
Pursue: accomplish, read thoroughly (P-05)
Quell: crush, put down (promote)
Quiescent: inactive, latent (dynamic)
Quixotic: imaginary, impractical (realistic)
Rancor: greedy, covetous, avaricious
Raucous: harsh, hoarse, loud (quiet)
Recapitulate: repeat, enumerate
Recompense: reward, compensation
Rectitude: integrity, honesty
Redundant: excessive, exuberant (concise)
Refulgent: shining, glittering (dull)
Replete: stuffed, full (empty)
Replica: coy, reproduction
Reprimand: rebuke, censure, blame
Repudiate: reject, renounce (adopt)
Resplendent: shining, glittering
Reticent: shy, reserved (T-10)
Rubicund: reddish, florid, ruddy
Rueful: sorrowful, unhappy (cheerful)
Sardonic: bitter, scornful (P-09)
Saucy: impertinent, impudent (polite)
Savoury: nice, tasty, palatable
Schematic: graphic, illustrative (T-05)
Scurrilous: abusive, vulgar (refined)
Sedulous: busy, industrious (inactive)
Seethe: boil, ferment (P-09)
Servitude: slavery, bondage (freedom)
Simulate: imitate, pretend, resemble
Slovenly: untidy, disorderly (tidy)
Smear: taint, spray (T-04)
Solicited: requested, petitioned (T-05)
Somber: gloom, dismal, dull
Somnolent: drowsy, sleepy (alert)
Sorcery: witchcraft, necromancy, magic
Spurious: counterfeit, fake (genuine)
Squalid: filthy, dirty (clean)
Stimulate: encourage, inspire (P-05)
Stolid: impassive, unemotional (sensitive)
Stratagem: trick, artifice, ruse
Subjugate: overthrow, conquer
Succinct: terse, concise (wordy)
Surmise: conjecture, guess
Swarthy: black, dark, dusky
Sycophant: flatterer, parasite, hanger-on
Taciturn: silent, reserved (garrulous)
Tangible: solid, real (unreal)
Tarnish: stain, taint, blemish
Temerity: recklessness, rashness (caution)
Terrain: tract of land/country (P-04, 10)
Thrifty: prudent, economical (spendthrift)
Thwart: defeat, oppose (further)
Timorous: timid, frightened (P-2000)
Torpor: sluggishness, inertness (vivacity)
Torrid: scorching, hot (cool)
Tortuous: winding, circuitous (straight)
Tranquil: calm, serene (noisy)
Transgress: violate, exceed, trespass
Tremulous: trembling, shivering, quaking
Truculent: savage, ferocious, belligerent
Tumid: turgid, swollen (flaccid)
Umbrage: displeasure, resentment
Unkempt: untidy, neglected (neat)
Urbane: suave, refined (uncouth)
Vanguard: front, leading (P-09)
Verdant: green, unripe, growing
Vestige: trace, sign, remnant
Victuals: food, brad, provisions
Vindictive: revengeful, avenging (T-10)
Vivacious: lively, merry (depressed)
Voluble: garrulous, glib (curt)
Wanton: reckless, unruly (restrained)
Wastrel: profligate, vagabond
Whet: stimulate, sharpen
Wistful: yearning, pensive
Wonted: usual, customary (unwonted)